Spectrum Use in Wireless Communications

Abstract

Wireless communications may include increased flexibility in spectrum utilization. Spectrum utilization may be increased by obtaining flexible or soft bands from a combination of multiple bands. The combination may include bands with the same or different types of duplex modes. Flexible or soft bands are band combinations that may be used according to single-band operation or by a single cell.

Description

[Technical Field]

[0001] FIELD OF THE DISCLOSURE The present disclosure relates generally to wireless communications, and more particularly to the potential for increased spectrum utilization flexibility in mobile device communication systems. [Background technology]

[0002] Wireless communication technologies are advancing the world toward a more interconnected and networked society every day. Wireless communication relies on efficient network resource management and allocation between user mobile stations and radio access network nodes (including, but not limited to, radio base stations). Next-generation networks are expected to provide high-speed, low-latency, and ultra-reliable communication capabilities to meet the demands of different industries and users. User mobile stations or user equipment (UE) are becoming increasingly complex, and the amount of data they transmit continues to increase. Communication improvements are needed to improve communication, meet the reliability demands of vertical industries, and support next-generation network services. Summary of the Invention [Problem to be solved by the invention]

[0003] The present disclosure relates to methods, systems, and devices for improving spectrum utilization flexibility. Spectrum utilization can be enhanced by obtaining flexible or soft bands from a combination of multiple bands. The combination may be bands with the same or different types of duplex modes. Flexible or soft bands are combinations of bands, but may be used as single-band operation or by a single cell. A combination of bands may refer to a combination of different frequencies. [Means for solving the problem]

[0004] In one embodiment, a method for wireless communication includes acquiring a soft band for wireless communication including a plurality of bands and operating the soft band according to single-band operation. Each of the plurality of bands includes one band, and the soft band includes a combination of bands. The single-band operation includes operation with a band combination. The plurality of bands includes a combination of different bands. The combination includes a combination of a Time Division Duplex (TDD) band and a Supplementary Uplink (SUL) band. A single cell having an uplink (UL) carrier and a downlink (DL) carrier is configured based on the combination, further, the UL carrier is in the SUL band and the DL carrier is in the TDD band. A UL subband is supported in the cell, the bandwidth of the UL subband is equal to the DL carrier, and the UL subband is in the TDD band. The combination includes a combination of a Time Division Duplex (TDD) band and a Supplementary Downlink (SDL) band. A single cell having a downlink (DL) carrier and an uplink (UL) carrier is configured based on the combination, further comprising: the DL carrier in an SDL band; and the UL carrier in a TDD band. DL subbands are supported in the cell; the bandwidth of the DL subband is equal to that of the UL carrier; and the DL subband is in the TDD band. The combination includes a combination of a frequency division duplex (FDD) band and a supplemental uplink (SUL) band. A single cell having an uplink (UL) carrier and a downlink (DL) carrier is configured based on the combination, further comprising: the UL carrier including non-contiguous spectrum from both the FDD band and the SUL band; and the combination includes a frequency division duplex (FDD) band and a supplemental downlink (SDL) band. A single cell having a downlink (DL) carrier and an uplink (UL) carrier is configured based on the combination, further comprising: the DL carrier including non-contiguous spectrum from both the FDD band and the SDL band. The combinations include combinations of time division duplex (TDD) bands and frequency division duplex (FDD) bands.A single cell having an uplink (UL) carrier and a downlink (DL) carrier is configured based on the combination, and the DL subband is supported by the UL carrier, and the UL carrier is in both the FDD band and the TDD band, the DL carrier is in the FDD band, and the DL subband is in the TDD band. A single cell having a downlink (DL) carrier and an uplink (UL) carrier is configured based on the combination, and the UL subband is supported by the DL carrier, and the DL carrier is in both the FDD band and the TDD band, the UL carrier is in the FDD band, and the UL subband is in the TDD band. A single cell having one downlink (DL) carrier and two uplink (UL) carriers is configured based on the combination, and the DL subband is supported by one of the two UL carriers, and the bandwidth of the DL subband is equal to that of one of the two UL carriers, or the DL subband is supported by one of the two UL carriers with larger spectrum resources. A single cell having two downlink (DL) carriers and one uplink (UL) carrier is configured based on the combination, and the UL subband is supported by one of the two DL carriers, and the bandwidth of the UL subband is equal to that of one of the two DL carriers, or the UL subband is supported by one of the two DL carriers with larger spectrum resources. The method includes using a gap between the FDD UL operating band and the FDD DL operating band to form a TDD band, or using overlapping of multiple bands with subbands. The combination includes combining two time division duplex (TDD) bands. A single cell having an uplink (UL) carrier and a downlink (DL) carrier is configured based on the combination, and the UL carrier is in one of the two bands and the DL carrier is in the other of the two bands, or both the UL carrier and the DL carrier are in the two bands. At least one of the UL subband and the DL subband is supported in the cell, and the UL subband is supported by the DL carrier, and the DL subband is supported by the UL carrier.A single cell having an uplink (UL) carrier and a downlink (DL) carrier is configured based on the combination, with both the UL carrier and the DL carrier being in one of two bands, and the other of the two bands being configured as at least one subband of the UL carrier and the DL carrier.

[0005] In one embodiment, a wireless communications device includes a processor and a memory, and the processor is configured to read code from the memory to implement any of the above embodiments.

[0006] In one embodiment, a computer program product includes computer readable program medium code stored on the computer program product, which when executed by a processor causes the processor to perform any of the above embodiments.

[0007] In some embodiments, there is a wireless communication device including a processor and a memory, the processor configured to read code from the memory to perform any method according to any of the embodiments. In some embodiments, a computer program product includes computer-readable program medium code stored on the computer program product, the code, when executed by the processor, causing the processor to perform any method according to any of the embodiments. These and other aspects and embodiments are described in more detail in the drawings, specification, and claims. [Brief explanation of the drawings]

[0008] [Figure 1] 1 illustrates an exemplary base station. [Figure 2] 1 illustrates an exemplary random access (RA) message transmission environment. [Figure 3] 1 shows a block diagram of an exemplary configuration of a transceiver and antenna; [Figure 4] 1 shows a block diagram illustrating the relationship between carriers, bands and cells. [Figure 5] The symbol / slot structure is shown. [Figure 6] 1 shows a band combination having a time division duplex (TDD) band and a supplemental uplink (SUL) band. [Figure 7] 1 shows a band combination having a time division duplex (TDD) band and a supplemental downlink (SDL) band. [Figure 8] 1 shows a band combination having a frequency division duplex (FDD) band and a supplemental uplink (SUL) band. [Figure 9] 1 shows a band combination having a frequency division duplex (FDD) band and a supplemental downlink (SDL) band. [Figure 10a] An example of a band combination with a time division duplex (TDD) band and a frequency division duplex (FDD) band is shown where the spectrum of the TDD band is higher than the FDD DL operating band. [Figure 10b] An example of a band combination having a time division duplex (TDD) band and a frequency division duplex (FDD) band is shown where the spectrum of the TDD band is lower than the FDD UL operating band. [Figure 10c] An example of a band combination having a time division duplex (TDD) band and a frequency division duplex (FDD) band is shown where the spectrum of the TDD band is located in the gap between the FDD UL operating band and the FDD DL operating band. [Figure 10d] An example of a band combination having a time division duplex (TDD) band and a frequency division duplex (FDD) band is shown where the spectrum of the TDD band includes an FDD UL or DL ​​operating band. [Figure 11] 1 shows a band combination having two time division duplex (TDD) bands. [Figure 12] An example of sub-band full duplex (SBFD) in two bands is shown. DETAILED DESCRIPTION OF THE INVENTION

[0009] The present disclosure will now be described in detail hereinafter with reference to the drawings, which form a part of this disclosure and which show, by way of illustration, specific examples of embodiments. It should be noted, however, that the present disclosure can be embodied in many different forms and the subject matter covered or claimed to be protected should not be construed as being limited to any of the embodiments described below.

[0010] Throughout the specification and claims, terms may have nuanced meanings expressed or implied in context beyond their expressly expressed meaning. Similarly, the phrases "in one embodiment" or "in some embodiments" used in this disclosure do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" used in this disclosure do not necessarily refer to different embodiments. The phrases "in one embodiment" or "in some embodiments" used in this disclosure do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" used in this disclosure do not necessarily refer to different embodiments. For example, the subject matter for which protection is sought may include combinations of all or part of the exemplary embodiments or embodiments.

[0011] Generally, terms can be understood, at least in part, from their use in context. For example, terms such as "and," "or," and "and / or" used in this disclosure may include various meanings, which depend, at least in part, on the context in which such terms are used. Typically, "or," when used in a related list such as A, B, or C, means A, B, and C, and is used in an inclusive sense in this disclosure, and A, B, or C is used in an exclusive sense in this disclosure. Also, the terms "one or more" or "at least one" used in this disclosure are at least in part context-dependent and can be used in a singular sense to describe any feature, structure, or characteristic, or in a plural sense to describe a combination of features, structures, or characteristics. Similarly, the terms "one," "one," or "the" are at least in part context-dependent and are understood to convey either the singular or the plural. Also, "based on" or "determined by" are at least in part context-dependent and are understood not necessarily to convey an exclusive set of elements, but rather to allow for the presence of additional elements not necessarily expressly recited.

[0012] Radio resource control (RRC) is a protocol layer between a UE and a base station at the IP layer (network layer). Various radio resource control (RRC) states can exist, such as an RRC_CONNECTED state, an RRC_INACTIVE state, and an RRC_IDLE state. RRC messages are transmitted via a Packet Data Convergence Protocol (PDCP). As described above, a UE can transmit data via a Random Access Channel (RACH) protocol or a Configured Grant (CG) protocol. CG can be used to reduce waste of periodically allocated resources by allowing multiple devices to share the periodic resources. A base station or node can allocate CG resources to eliminate packet transmission delays and improve utilization of allocated periodic radio resources. The CG protocol may be merely one example of a communication protocol scheme, including, but not limited to, RACH. The wireless communication described in this disclosure can be accessed over the air.

[0013] Improvements in wireless or mobile communication technologies increase the need. Based on current development trends, systems are developing support for enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine-type communication (mMTC) features. Full duplex is likely a requirement for 5G and later communication systems. In wireless communications, network equipment such as user equipment (UE) can perform uplink (UL) transmitter (Tx) switching between bands. In multi-carrier operation, network equipment transmitting using two transmitters (also called 2Tx user equipment) can transmit in two UL bands. Radio resource control (RRC) reconfiguration can change which two bands are used.

[0014] Carrier aggregation (CA) can be used in both 4G and 5G and future communication systems. Multiple carriers or cells originating from one or more bands can be configured to improve performance through the sharing of user equipment (UE) capabilities. UE capabilities are shared within a carrier / band / cell. Uplink (UL) transmission (Tx) switching is an example of a UE capability shared between two bands originating from one transmitter. When one carrier or one band does not operate at a certain time or within a certain time / duration, it is acceptable to share UE capabilities to improve communication. In another example, if some hardware or software can be shared between bands or carriers, higher UE capabilities can be achieved for some UEs when cost constraints are small. UE capability sharing is further explained in the following examples.

[0015] In some wireless communication embodiments, uplink (UL) symbols or slots can be configured / scheduled to transmit data or control information from user equipment to a base station, and downlink (DL) symbols or slots can be configured / scheduled to transmit data or control information from a base station to a UE. In one example, for a time division duplex (TDD) carrier, the DL symbols (or slots) and UL symbols (or slots) can be configured in a time division manner.

[0016] An operating band can be defined for use by a network operator. The definition of a band may include a frequency domain and a duplex mode. Duplex modes may include frequency division duplex (FDD), time division duplex (TDD), supplemental downlink (SDL), and / or supplemental uplink (SUL). In some embodiments, variable duplex FDD may exist, and an FDD band can be created by combining an SUL band and an SDL band. In the case of full duplex, non-overlapping subbands are considered, and at least one UL subband can be supported or allocated within a TDD carrier. The following examples illustrate these combinations, improving spectrum utilization flexibility. Advantages of some or all types of duplex modes, such as low latency, high peak rates, better coverage, and high reliability, can be realized.

[0017] 1 illustrates an exemplary base station 102. A base station may also be referred to as network equipment or a radio network node. In a mobile telecommunications environment, the base station 102 may also be labeled a Node B (NB, e.g., eNB or gNB). The exemplary base station may include radio Tx / Rx circuitry 113 to transmit and receive to and from user equipment (UE) 104. The base station may further include network interface circuitry 116 to couple the base station to a core network 110, such as optical or wired interconnects, Ethernet, and / or other data transmission media / protocols.

[0018] The base station may further include system circuitry 122. The system circuitry 122 may include one or more processors 124 and / or memory 126. The memory 126 may include operations 128 and control parameters 130. The operations 128 may include instructions executed by the one or more processors 124 to support operation of the base station. For example, these operations may process random access transmission requests originating from multiple UEs. The control parameters 130 may include parameters or support the execution of the operations 128. For example, the control parameters may include network protocol settings, random access message transmission format rules, bandwidth parameters, radio frequency mapping assignments, and / or other parameters.

[0019] Signals transmitted between communication nodes in the system 100 may also be referred to or defined as data signals or control signals. Generally, a data signal is a signal that contains or carries data (e.g., multimedia data (e.g., voice and / or image data)), and a control signal is a signal that carries control information that configures communication nodes to communicate with each other in a particular manner or otherwise controls how communication nodes communicate data signals with each other. Certain signals may also be defined or referred to by a combination of data / control and uplink / downlink / sidelink, including uplink control signals, uplink data signals, downlink control signals, downlink data signals, sidelink control signals, and sidelink data signals. Certain signals may also be referred to or defined as uplink (UL) signals, downlink (DL) signals, or sidelink (SL) signals. An uplink signal is a signal transmitted from a UE 104 to a base station 102. A downlink signal is a signal transmitted from a base station 102 to a UE 104. A sidelink signal is a signal transmitted from one UE 104 to another UE.

[0020] In at least some specifications, e.g., 5G New Radio (NR), data and control signals are transmitted and / or carried on physical channels. Typically, a physical channel corresponds to a set of time-frequency resources for transmission of signals. Different types of physical channels can be used to transmit different types of signals. For example, a physical data channel (or data channel only) (also referred to as a traffic channel in this disclosure) is used to transmit data signals, and a physical control channel (or control channel only) is used to transmit control signals. Exemplary types of traffic channels (or physical data channels) include, but are not limited to, a physical downlink shared channel (PDSCH) for transmitting downlink data signals, a physical uplink shared channel (PUSCH) for transmitting uplink data signals, and a physical sidelink shared channel (PSSCH) for transmitting sidelink data signals. Additionally, exemplary types of physical control channels include, but are not limited to, a physical downlink control channel (PDCCH) for transmitting downlink control signals, a physical uplink control channel (PUCCH) for transmitting uplink control signals, and a physical sidelink control channel (PSCCH) for transmitting sidelink control signals. For convenience, as used in this disclosure, unless otherwise specified, a particular type of physical channel will also be used to refer to a signal transmitted on that particular type of physical channel and / or a transmission on a particular type of transmission. For illustrative purposes, a PDSCH may refer to the physical downlink shared channel itself, a downlink data signal transmitted on the PDSCH, or a downlink data transmission.Therefore, a communication node that transmits and receives a PDSCH means that the communication node transmits and receives signals on the PDSCH.

[0021] Also, in at least some specifications (e.g., 5G NR) and / or at least some types of control signals, control signals transmitted by communication nodes may include control information, including information necessary for enabling transmission of one or more data signals between communication nodes and / or scheduling one or more data channels (or one or more transmissions on a data channel). For example, such control information may include information necessary for accurate reception, decoding, and demodulation of data signals received on a physical data channel during a data transmission period, and / or information necessary for an uplink scheduling grant, which indicates user equipment resources and transmission formats for transmitting uplink data. In some embodiments, the control information includes downlink control information (DCI) transmitted from the base station 102 to the UE 104 in the downlink direction. In other embodiments, the control information includes uplink control information (UCI) transmitted from the UE 104 to the base station 102 in the uplink direction, or sidelink control information (SCI) transmitted from one UE 104 to another UE 104 in the sidelink direction.

[0022] In some embodiments, the UE 104 may be configured to support at least one UL parallel transmission mode between band pairs for UL transmission. In a first UL parallel transmission mode (also referred to as a switched UL mode), the UE 104 does not support UL parallel transmission between band pairs. Therefore, when the UE 104 transmits a UL transmission in the first UL parallel transmission mode, the UE 104 transmits a UL transmission without transmitting in parallel between band pairs. In a second UL parallel transmission mode (also referred to as a dual UL mode), the UE 104 supports UL parallel transmission between band pairs. Therefore, when the UE 104 transmits a UL transmission in the second UL parallel transmission mode, the UE 104 can transmit a UL transmission by parallel transmission between band pairs.

[0023] In some embodiments, the UE 104 may report one or more UL parallel transmission modes to the base station 102. That is, the UE 104 may report to the base station 102 whether it supports UL parallel transmission between band pairs, does not support UL parallel transmission between band pairs, or both supports and does not support UL parallel transmission between band pairs. In particular, in these embodiments, the UE 104 may report whether it supports UL parallel transmission between band pairs of each band combination (BC). The base station 102 may also configure the UL parallel transmission mode (e.g., switched UL or dual UL) per cell group, which may be considered per BC or per band pair in embodiments where a 2-Tx user equipment supports only two bands. That is, one available band pair in a band combination may support one UL parallel transmission mode.

[0024] Also, generally, as used in this disclosure, a band combination may include multiple bands (e.g., five bands). Also, as used in this disclosure, a band group may include three or four bands. A given band group may be included in or may be part of a band combination. Also, a band combination and / or band group may include at least one band pair, where a band pair includes two bands.

[0025] 2 illustrates an exemplary random access message communication environment 200. In the random access message communication environment, a UE 104 can communicate with a base station 102 via a random access channel 252. In the example, the UE 104 supports one or more Subscriber Identity Modules (SIMs), such as SIM1 202. An electrical and physical interface 206 connects SIM1 202 to the rest of the user equipment hardware, such as via a system bus 210.

[0026] Mobile device 200 includes a communications interface 212, system logic 214, and a user interface 218. System logic 214 may include any combination of hardware, software, firmware, or other logic. System logic 214 may be implemented, for example, in one or more systems on a chip (SoC), application specific integrated circuits (ASICs), discrete analog and digital circuits, and other circuits. System logic 214 is part of any necessary functionality implementation in UE 104. In this regard, system logic 214 may include logic to facilitate operations such as decoding and playing music and video, such as MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback; executing applications; accepting user input; storing and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections (e.g., Internet connections); establishing, maintaining, and terminating wireless network, Bluetooth, or other connections; and displaying related information in user interface 218. The user interface 218 and input 228 may include a graphical user interface, a touch-sensitive display, haptic feedback or other tactile output, voice or facial recognition input, buttons, switches, speakers, and other user interface elements. Other examples of input 228 include microphones, video and still cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headphone and microphone input / output jacks, Universal Serial Bus (USB) connectors, memory card slots, radiation sensors (e.g., IR sensors), and other types of inputs.

[0027] The system logic 214 may include one or more processors 216 and memory 220. The memory 220 stores, for example, control instructions 222 that are executed by the processor 216 to achieve desired functionality of the UE 104. Control parameters 224 provide and specify configuration and operating options for the control instructions 222. The memory 220 may also store any BT, WiFi, 3G, 4G, 5G, or other data 226 that the UE 104 transmits or receives via the communication interface 212. In various embodiments, power for the system may be provided by a power storage device, such as a battery 282.

[0028] In the communications interface 212, radio frequency (RF) transmit (Tx) and receive (Rx) circuitry 230 handles the transmission and reception of signals via one or more antennas 232. The communications interface 212 may include one or more transceivers, which may be wireless transceivers including modulation / demodulation circuitry, digital-to-analog converters (DACs), shaping tables, analog-to-digital converters (ADCs), filters, waveform shapers, filters, preamplifiers, power amplifiers, and / or other logic for transmitting and receiving via one or more antennas or (in some devices) a physical (e.g., wired) medium.

[0029] The transmitted and received signals may follow any of a variety of formats, protocols, modulations (e.g., QPSK, 16-QAM, 64-QAM, or 256-QAM), frequency channels, bit rates, and encodings. As one specific example, communication interface 212 may include a transceiver supporting transmission and reception in 2G, 3G, BT, WiFi, Universal Mobile Telecommunications System (UMTS), High Speed ​​Packet Access (HSPA)+, and 4G / Long Term Evolution (LTE) standards. However, the techniques described below apply to other wireless communication technologies, whether from the 3rd Generation Partnership Project (3GPP), GSM Association, 3GPP2, IEEE, or other partnership projects or standards bodies.

[0030] Multiple RAN nodes (e.g., eNBs, gNBs) of the same or different radio access technologies ("RATs") can be deployed on the same or different frequency carriers in several geographic regions, and they can cooperate with each other through dual connectivity operation to provide joint communication services to one or more common target UEs. A multi-RAT dual connectivity ("MR-DC") architecture can have a non-co-located master node ("MN") and secondary node ("SN"). The Access Mobility Function ("AMF") and Session Management Function ("SMF") may be control plane entities, and the User Plane Function ("UPF") is a user plane entity in New Radio Access Technology ("NR") or 5GC.

[0031] FIG. 3 shows a block diagram of an example configuration of the transceiver 212 and antenna 232. Specifically, the transceiver 212 includes a first transmitter (Tx) (or transmitter circuit) 302(1) and a second transmitter (Tx) (or transmitter circuit) 302(2). The antenna 232 may also include a first antenna component 304(1) and a second antenna component 304(2). Typically, the first transmitter 302(1) and the first antenna component 304(1) may form a first transmitter channel or chain, and the second transmitter 302(2) and the second antenna component 304(2) may form a second transmitter channel or chain. A UE 104 having the configuration in FIG. 2 may be configured to transmit a first UL transmission (or a first portion of a UL transmission) using the first transmitter channel and to transmit a second UL transmission (or a second portion of a UL transmission) using the first transmitter channel.

[0032] In some embodiments, the UE 104 can transmit on one or two bands or carriers using two transmitter channels. The UE 104 can do so in any of a variety of ways. For example, the UE 104 can transmit on a single carrier using both the first and second transmission channels. As another example, the UE 104 can transmit on a first carrier using the first transmission channel and on a second carrier using the second transmission channel. As used in this disclosure, the terms "1Tx" and "1T" refer to transmitting on one carrier using one channel, and the terms "2Tx" and "2T" refer to transmitting on one carrier using two transmission channels. Also, as used in this disclosure, the phrase "UL transmission status" refers to a specific configuration of transmission channels for UL transmission on one or more carriers. Also, as described in more detail below, the UE 104 can switch between UL transmission statuses during a UL Tx switching operation.

[0033] Additionally, in various embodiments, the UE 104 may perform UL transmitter (Tx) switching to perform UL transmission. Typically, the UE 104 may perform UL Tx switching by switching from one UL transmission status to another UL transmission status. During operation, the UE 104 may transmit a UL transmission based on a first UL transmission status, and then switch from the first UL transmission status to a second UL transmission status and transmit a UL transmission based on the second UL transmission status. Additionally, in various embodiments, the UL transmission status may indicate the number of antenna ports corresponding to the carrier. The indication may be in the form of a mapping between the carrier and the corresponding number of antenna ports. In at least some of these embodiments, the number of antennas may depend on whether the UE 104 supports parallel transmission between band pairs.

[0034] Figure 4 shows a block diagram illustrating the relationship between carriers, bands, and cells. A UE can configure two bands and perform TX switching. A new radio access technology (NR) architecture can be designed to operate in the operating bands defined for FR1 and FR2. For example, some bands in FR1 have corresponding frequency domains and duplex modes, as shown in Table 1 below.

[0035] [Table 1]

[0036] In the case of subband full duplex (SBFD), uplink (UL) subbands can be supported or configured within a downlink slot / symbol in a DD carrier. Based on Rel-16 variable duplex, n91 can be generated by combining SUL n82 and SDL n76. As described in this disclosure, there may be soft or flexible bands that are combinations of one or more bands with the same or different types of duplex modes. The combination embodiment can also be used in single-band operation.

[0037] FIG. 5 shows a symbol / slot structure. The example shown is DDDSU (501, 502, 503, 504, and 505). In this example, D represents DL symbols / slots, U represents UL symbols / slots, and S represents flexible symbols / slots that include DL and UL symbols. As shown in the figure, UL slots are few and non-contiguous, and their characteristics affect the performance of UL transmission. In some embodiments, full-duplex technology based on UL subbands can be implemented as subband-based full duplex (SBFD). FIG. 5 shows one configuration mode of the UL subband, where UL subband 510 is configured for DL ​​symbols / slots. In some embodiments, the UL subband may be configured for some or all DL symbols / slots.

[0038] The examples described below refer to each combination of bands as a single flexible or soft band. For convenience, the acquired bands may be referred to as soft bands, but may also include combinations of bands (including single-band operation) and be referred to as flexible or combined bands. As noted above, references to combined bands may include single-band operation.

[0039] Combining TDD and SUL 6 shows a band combination having a time division duplex (TDD) band and a supplemental uplink (SUL) band. In this embodiment, the combination of the TDD band and the SUL band is performed according to single-band operation, not as two carriers in two bands. This combination results in a soft band or flexible band, where there is only one downlink (DL) carrier and one uplink (UL) carrier in the cell operated in the band.

[0040] In some embodiments, a flexible / soft band can be operated by one cell. A single cell may include an UL carrier and an UL subband. The bandwidth of the UL subband may be equal to the TDD DL carrier. A flexible TDD band may exist, where the UL subband is supported and the UL subband is equal in bandwidth to the DL carrier. In some embodiments, a single cell may include a soft UL carrier, which includes non-contiguous frequency resources derived from the SUL band and the TDD band, optionally represented by one BWP or multiple BWPs.

[0041] The flexible / soft band includes both UL and DL operating bands. The DL operating band may consist of UL slots / symbols or UL sub-bands. The UL carriers may be located in the UL operating band, and the DL carriers and UL sub-bands may be located in the DL operating band. The spectrum of the UL operating band and the DL operating band may be different.

[0042] In this embodiment, the flexible / soft band is obtained by combining the TDD band and the SUL band, which can provide higher system spectral efficiency compared to conventional TDD, thereby improving both UL coverage and capacity.

[0043] Combining TDD and SDL 7 shows a band combination having a time division duplex (TDD) band and a supplemental downlink (SDL) band. In this embodiment, the combination of the TDD band and the SDL band is performed according to single-band operation, not as two carriers in two bands. This combination results in a soft band or flexible band, where there is only one downlink (DL) carrier and one uplink (UL) carrier in the cell operated in the band.

[0044] In some embodiments, a flexible / soft band may be operated by one cell. A single cell may include a DL carrier and a DL subband. The bandwidth of the DL subband may be equal to the TDD UL carrier. A flexible TDD band may exist, where the DL subband is supported and the DL subband is equal in bandwidth to the UL carrier. In some embodiments, a single cell may include a soft DL carrier, where the soft DL carrier includes non-contiguous frequency resources from the SDL band and the TDD band, optionally represented by one BWP or multiple BWPs.

[0045] The flexible / soft band includes both UL and DL operating bands. The UL operating band may consist of DL slots / symbols or DL ​​sub-bands. The UL carriers and DL sub-bands may be located in the UL operating band. The DL carriers may be located in the DL operating band. The spectrum of the UL operating band and the DL operating band may be different.

[0046] In this embodiment, the flexible / soft band is obtained by combining the TDD band and the SDL band, which can provide higher system spectrum efficiency compared to the TDD system and can provide advantages during busy periods of DL traffic.

[0047] Combination of FDD and SUL 8 shows a band combination having a frequency division duplex (FDD) band and a supplemental uplink (SUL) band. In this embodiment, the combination of the FDD band and the SUL band is performed according to single-band operation, not as two carriers in two bands. This combination results in a soft band or flexible band, where there is only one downlink (DL) carrier and one uplink (UL) carrier in the cell operated in the band.

[0048] In some embodiments, a flexible / soft band may be operated by one cell. A single cell may include non-contiguous UL operating bands or may be obtained by combining multiple UL operating bands. A UL carrier or UL BWP may be located in the UL operating band and may support non-contiguous frequency resources. In some embodiments, there may be a flexible FDD band with non-contiguous frequency resources supported by a UL BWP. In some embodiments, a single cell may include a soft UL carrier, which includes non-contiguous frequency resources derived from the SUL band and the FDD band, optionally represented by one BWP or multiple BWPs.

[0049] The flexible / soft band includes both UL and DL operating bands. The UL operating band may be configured as a non-contiguous UL operating band or may be obtained by combining multiple UL operating bands. A UL carrier or UL BWP may be located in the UL operating band and may support non-contiguous frequency resources. The spectrum of the UL operating band and the DL operating band may be different.

[0050] In this embodiment, the flexible / soft band is obtained by combining the FDD band and the SUL band, which can provide higher system spectral efficiency compared to other FDDs and can improve both UL coverage and capacity.

[0051] Combining FDD and SDL 9 shows a band combination having a frequency division duplex (FDD) band and a supplemental downlink (SDL) band. In this embodiment, the combination of the FDD band and the SDL band is performed according to single-band operation, not as two carriers in two bands. This combination results in a soft band or flexible band, where there is only one downlink (DL) carrier and one uplink (UL) carrier in the cell operated in the band.

[0052] In some embodiments, a flexible / soft band can be operated by one cell. A single cell may include non-contiguous DL carriers, where the spectrum of the DL carrier includes a non-contiguous DL operating band or multiple DL operating bands. A DL carrier or DL ​​BWP may be located in a DL operating band and may support non-contiguous frequency resources. In some embodiments, a single cell may include a soft DL carrier, where the soft DL carrier includes non-contiguous frequency resources from the SDL band and the FDD band, optionally represented by one BWP or multiple BWPs.

[0053] The flexible / soft band includes both UL and DL operating bands. The DL operating band may be configured as a non-contiguous UL operating band or may be obtained by combining multiple DL operating bands. DL carriers or DL ​​BWPs may be located in the DL operating band and may support non-contiguous frequency resources. The spectrum of the UL operating band and the DL operating band may be different.

[0054] In this embodiment, the flexible / soft band is obtained by combining the FDD band and the SDL band, which can provide higher system spectrum efficiency compared to the FDD system and can provide advantages during busy periods of DL traffic.

[0055] Combining FDD and TDD A combination of FDD and TDD can still operate according to a single cell. The embodiments described below include single cell operation with a combination of FDD and TDD bands.

[0056] In one embodiment, a combination of a TDD band and an FDD UL operating band may exist. This may be similar to the operation of the combination of a TDD band and an SUL band shown in FIG. 6 and described above. In this embodiment, the combination of a TDD band and an FDD UL operating band is performed according to single-band operation, not as two carriers in two bands. This combination results in a soft band or flexible band, where a cell operating in the band has only one downlink (DL) carrier and one uplink (UL) carrier. The flexible / soft band may be operated by one cell. A single cell may include a UL carrier and a UL subband. The bandwidth of the UL subband may be equal to the TDD DL carrier. A flexible TDD band may exist, where a UL subband is supported and the UL subband has the same bandwidth as the DL carrier. The UL carrier may be located in the UL operating band, and the DL carrier and the UL subband may be located in the DL operating band. The spectrum of the UL operating band and the DL operating band may be different. In this embodiment, the flexible / soft band is obtained by combining the TDD band with the FDD UL operating band, which can provide higher system spectral efficiency compared to TDD or FDD systems, thereby improving both UL coverage and capacity.

[0057] In another embodiment, a combination of a TDD band and an FDD DL operating band may exist. This may be similar to the operation of the combination of a TDD band and an FDD DL band shown in FIG. 7 and described above. In this embodiment, the combination of a TDD band and an FDD DL operating band is performed according to single-band operation, not as two carriers in two bands. This combination results in a soft band or flexible band, where a cell operating in the band has only one downlink (DL) carrier and one uplink (UL) carrier. A flexible / soft band may be operated by one cell. A single cell may include a DL carrier and a DL subband. The bandwidth of the DL subband may be equal to the TDD UL carrier. A flexible / soft band includes both UL and DL operating bands. The UL operating band may consist of DL slots / symbols or DL ​​subbands. The UL carrier and DL subband may be located in the UL operating band. The DL carrier may be located in the DL operating band. The spectrum of the UL operating band and the DL operating band may be different. In this embodiment, the flexible / soft band is obtained by combining the TDD band and the FDD DL operating band, which can provide higher system spectrum efficiency compared to TDD or FDD systems and can provide advantages during busy periods of DL traffic.

[0058] 10a-10d show optional examples of combinations with a TDD band and an FDD band. In these examples, the combination of the TDD band and the FDD band is performed according to single-band operation, not as two carriers in two bands, or only when the spectrum of the TDD band is higher than the FDD DL operating band. The combination results in a soft or flexible band, where there is only one downlink (DL) carrier and one uplink (UL) carrier in the cell operated in the band.

[0059] FIG. 10a shows an example of a band combination with a time division duplex (TDD) band and a frequency division duplex (FDD) band, where the spectrum of the TDD band is higher than the FDD DL operating band.

[0060] In some embodiments, a single cell includes a DL carrier and an UL carrier, where DL (or UL) subbands are supported / configured on the UL (or DL) carrier. There may be variable FDD bands with DL BWPs and / or UL BWPs supporting non-contiguous frequency resources. In some embodiments, a single cell may include a soft UL or DL ​​carrier, where the soft UL or DL ​​carrier includes non-contiguous frequency resources derived from the TDD and FDD bands, optionally represented by one BWP or multiple BWPs.

[0061] In some embodiments, a single cell includes one DL carrier and two UL carriers (or two DL carriers and one UL carrier), where a DL (or UL) subband is located in one of the two UL (or DL) carriers. The bandwidth of a DL (or UL) subband may be equal to the UL (or DL) carrier in which the DL (or UL) subband is configured / supported. There may be variable FDD bands with DL BWPs and / or UL BWPs supporting non-contiguous frequency resources. One BWP can be used with some or all frequency resources of two carriers.

[0062] FIG. 10b shows an example of a band combination with a time division duplex (TDD) band and a frequency division duplex (FDD) band, where the spectrum of the TDD band is lower than the FDD UL operating band.

[0063] In some embodiments, a single cell includes a DL carrier and an UL carrier, where DL (or UL) subbands are supported / configured on the UL (or DL) carrier. There may be variable FDD bands with DL BWP and / or UL BWP supporting non-contiguous frequency resources.

[0064] In some embodiments, a single cell includes one DL carrier and two UL carriers (or two DL carriers and one UL carrier), where a DL (or UL) subband is located in one of the two UL (or DL) carriers. The bandwidth of a DL (or UL) subband may be equal to the UL (or DL) carrier in which the DL (or UL) subband is configured / supported. There may be variable FDD bands with DL BWPs and / or UL BWPs supporting non-contiguous frequency resources. One BWP can be used with some or all frequency resources of two carriers.

[0065] FIG. 10c shows an example of a band combination with a time division duplex (TDD) band and a frequency division duplex (FDD) band, where the spectrum of the TDD band is located in the gap between the FDD UL operating band and the FDD DL operating band.

[0066] In some embodiments, a single cell includes a DL carrier and an UL carrier, where DL (or UL) subbands are supported / configured on the UL (or DL) carrier. There may be variable FDD bands with DL BWP and / or UL BWP supporting non-contiguous frequency resources.

[0067] In some embodiments, a single cell includes one DL carrier and two UL carriers (or two DL carriers and one UL carrier), where a DL (or UL) subband is located in one of the two UL (or DL) carriers. The bandwidth of the DL (or UL) subband may be equal to the UL (or DL) carrier in which the DL (or UL) subband is configured / supported. There may be variable FDD bands with DL BWP and / or UL BWP supporting non-contiguous frequency resources. One BWP can be used with some or all frequency resources of two carriers.

[0068] In some embodiments, the gap between the FDD UL operating band and the DL operating band or the overlapping operating band of SBFD can be used to achieve more flexible band utilization. The flexible / soft band may include both UL and DL operating bands. The DL (or UL) operating band may be a non-contiguous DL (or UL) operating band or may be obtained by combining multiple DL (or UL) operating bands. The DL (or UL) carrier or DL ​​(or UL) BWP may be located in the DL (or UL) operating band and may support non-contiguous frequency resources. The spectrum of the UL operating band and the DL operating band may be the same or different. By utilizing the gap in the FDD band or the overlapping DL / UL operating band, the flexible / soft band can be obtained by combining the FDD band and the TDD band, resulting in higher system spectrum efficiency compared to the conventional combination.

[0069] FIG. 10d shows an example of a band combination having a time division duplex (TDD) band and a frequency division duplex (FDD) band, where the spectrum of the TDD band includes an FDD UL or DL ​​operating band.

[0070] In some embodiments, the gap between the FDD UL operating band and the DL operating band or the overlapping operating band of SBFD can be used to achieve more flexible band utilization. The flexible / soft band may include both UL and DL operating bands. The DL (or UL) operating band may be a non-contiguous DL (or UL) operating band or may be obtained by combining multiple DL (or UL) operating bands. The DL (or UL) carrier or DL ​​(or UL) BWP may be located in the DL (or UL) operating band and may support non-contiguous frequency resources. The spectrum of the UL operating band and the DL operating band may be the same or different. By utilizing the gap in the FDD band or the overlapping DL / UL operating band, the flexible / soft band can be obtained by combining the FDD band and the TDD band, resulting in higher system spectrum efficiency compared to the conventional combination.

[0071] In some embodiments, a single cell includes two DL carriers and one UL carrier, where the UL subband is located on the DL carrier with large spectral resources. A flexible FDD band may exist with a DL BWP supporting non-contiguous frequency resources. One BWP can be used with some or all of the frequency resources of the two carriers.

[0072] Combining TDD with TDD Figure 11 shows a band combination with two time division duplex (TDD) bands. The combination of one TDD band with another TDD band can still operate according to a single cell. The embodiments described below include single-cell operation with the combination of two TDD bands, and are not implemented as two carriers in the two bands. The combination results in a soft band or flexible band, where there is only one downlink (DL) carrier and one uplink (UL) carrier in the cell operated in the band.

[0073] In some embodiments, a flexible / soft band may be operated by one cell, and the cell includes a DL carrier and a UL carrier, and a UL subband and a DL subband. The bandwidth of the DL subband may be equal to that of the UL carrier. The bandwidth of the UL subband may be equal to that of the DL carrier. A flexible FDD band may exist, where the DL subband is supported and has the same bandwidth as the UL carrier, and the UL subband is supported and has the same bandwidth as the DL carrier. In some embodiments, the flexible / soft band may be a flexible FDD band and includes UL and DL operating bands. The UL operating band may consist of DL slots / symbols or DL ​​subbands, and the DL operating band may consist of UL slots / symbols or UL subbands. The UL carrier and DL subband may be located in the UL operating band, and the DL carrier and UL subband may be located in the DL operating band. The spectrum of the UL operating band and the DL operating band may be different. The bandwidth of the DL subband may be equal to that of the UL carrier. The bandwidth of the UL subband may be equal to the DL carrier.

[0074] In some embodiments, one carrier / band can be configured as subband full duplex (SBFD) with another carrier / band. A single carrier in a flexible / soft band may include two TDD bands, where the second TDD band is configured as SBFD with the carrier of the first band. SBFD can be achieved by BWP-based SBFD. This can be achieved by two BWP operations, and a single TDD carrier is an aggregate carrier of the two bands, or by BWP configured for one TDD band and SBFD configured for another TDD band other than the BWP. A flexible / soft band may be a configurable TDD band that configures and supports both an UL band and DL subbands. DL subbands and UL subbands are configured outside the TDD carrier. A flexible / soft band is obtained by combining a TDD band with another TDD band. Compared to TDD alone, higher system spectral efficiency can be achieved, and latency for both DL and UL traffic may be lower. In some embodiments, a single cell may include at least one of a soft UL carrier and a soft DL carrier, wherein at least one of the soft UL carrier and the soft DL carrier includes non-contiguous frequency resources derived from two TDD bands, optionally represented by one BWP or multiple BWPs.

[0075] Furthermore, the above embodiment can be used in idle states, and single cell operation simplifies cell management.

[0076] Embodiments with a single band or multiple bands may exist. To use the duplexer more efficiently, duplexer sharing within a single band or multiple bands for subband full duplexing (SBFD) may be supported. For SBFD on TDD carriers supported by the base station, the UE may still perform according to TDD or HD-FDD, and the UE may not require a duplexer. If the UE supports SBFD on a TDD carrier, one duplexer may be shared between SBFD symbols and non-SBFD symbols. For example, within a subband portion or the duration of an SBFD symbol, the duplexer can be used for FDD on the DL subband and the UL subband. During other portions of the duration or non-SBFD symbols, the duplexer can be used for conventional TDD switching for D / U switching. Alternatively, when configuring / supporting multiple bands for inter-band CA (one or more of which have SBFD), duplexer sharing may exist between bands. Figure 12 shows an embodiment of subband full duplexing (SBFD) in two bands. SBFD in two bands may be included. For example, complementary SBFD has an SBFD symbol or duration configured for an UL sub-band on one carrier in one band that does not overlap in the time domain with an SBFD symbol or duration configured for an UL sub-band on another carrier in another band. There may be a switch on each TDD carrier / band, and one duplexer shares the SBFD symbol duration between the two bands, where the two bands have complementary SBFD symbols.

[0077] The above systems and processes can be encoded on a signal-bearing medium, a computer-readable medium (e.g., memory), programmed within a device (e.g., one or more integrated circuits, one or more processors), or processed by a controller or computer. The data can be analyzed by a computer system and used to generate a spectrum. When these methods are performed by software, the software can reside in a memory that resides in or connects to a storage device, a synchronizer, a communication interface, or a non-volatile or volatile memory that communicates with a transmitter. The circuitry or electronics is designed to transmit the data to another location. The memory may contain an ordered list of executable instructions for performing a logic function. The described logic function or any system element can be implemented by optical circuitry, digital circuitry, source code, analog circuitry, an analog source (e.g., analog electrical, audio, or video signals), or a combination thereof. The software can be embodied in any computer-readable or signal-bearing medium and used by or in connection with an instruction-executable system, device, or appliance. Such systems may include computer-based systems, processor-containing systems, or other systems capable of selectively obtaining instructions from an instruction-executable system, device, or appliance that is also capable of executing instructions.

[0078] "Computer-readable medium," "machine-readable medium," "propagation signal medium," and / or "signal-bearing medium" may include any device used by or connected to an instruction-executable system, apparatus, or device, including storing, transmitting, propagating, or transmitting software. The machine-readable medium may optionally be, but is not limited to, an electric, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, device, or propagation medium. A non-exhaustive list of examples of machine-readable media includes electrically connected "electronic" devices having one or more leads, portable or optical disks, volatile memory (e.g., random access memory "RAM," read-only memory "ROM," erasable programmable read-only memory (EPROM or flash memory), or optical fiber). Machine-readable media may also include tangible media when printing software, since software may be stored electronically as an image or in another format (e.g., by optical scanning) and then compiled and / or interpreted or otherwise processed. The processed medium may then be stored in computer and / or device memory.

[0079] The illustrations of the embodiments described in this disclosure are intended to provide a general understanding of the structure of various embodiments. These illustrations are not intended to be a complete description of all elements and features of apparatus and systems that use the structures or methods described in this disclosure. Many other embodiments will become apparent to those skilled in the art after reading this disclosure. Other embodiments may be utilized, and structural and logical substitutions and changes may be made in light of this disclosure, without departing from the scope of this disclosure. Additionally, these illustrations are merely representative and may not be made to scale. Some proportions in the illustrations may be exaggerated, and other proportions may be minimized. Therefore, the disclosure and the drawings should be regarded as illustrative and not restrictive.

[0080] One or more embodiments of the present disclosure may be referred to singly and / or collectively under the term "invention" for convenience, and are not intended to spontaneously limit the scope of the present application to any particular invention or inventive concept. Furthermore, while specific embodiments have been shown and described in this disclosure, it should be understood that any subsequent arrangement designed to achieve the same or similar purpose may be substituted for the specific embodiment shown. The present disclosure is intended to include any and all subsequent adaptations or modifications of the various embodiments. Combinations of the above embodiments and other embodiments not specifically described in this disclosure will be apparent to those skilled in the art after reading the present disclosure.

[0081] The phrase "coupled with" is defined as directly connected or indirectly connected through one or more intermediate components. Such intermediate components may include both hardware-based and software-based components. Variations in the arrangement and type of components may be made without departing from the spirit or scope of the claims set forth in this disclosure. Additional, different, or fewer components may be provided.

[0082] The subject matter disclosed above should be considered illustrative rather than limiting, and the appended claims are intended to cover all such modifications, enhancements, and other embodiments that fall within the true spirit and scope of the present invention. Accordingly, to the maximum extent permitted by law, the scope of the present invention should be determined by the broadest permissible interpretation of the appended claims and their equivalents, and should not be limited or constrained by the above detailed description. While various embodiments of the present invention have been described, those skilled in the art will recognize that there may be many more examples and embodiments that fall within the scope of the present invention. Accordingly, the present invention is not limited except in accordance with the appended claims and their equivalents.

Claims

1. 1. A method for wireless communication, comprising: acquiring a soft band for wireless communication including a plurality of bands; and operating the soft band according to a single band operation. A method for wireless communication.

2. each of the plurality of bands includes one band, and the soft band includes a combination of bands; The method of claim 1.

3. Single band operation includes operation in a combination of bands. The method of claim 2.

4. the plurality of bands includes a combination of different bands; The method of claim 1.

5. the combination includes a combination of a time division duplex (TDD) band and a supplemental uplink (SUL) band; The method of claim 4.

6. a single cell having an uplink (UL) carrier and a downlink (DL) carrier is established based on the combination, and further, the UL carrier is in the SUL band, and the DL carrier is in the TDD band; The method of claim 5.

7. An UL subband is supported in the cell, the bandwidth of the UL subband is equal to the DL carrier, and the UL subband is in the TDD band. The method of claim 6.

8. the combination includes a combination of a time division duplex (TDD) band and a supplemental downlink (SDL) band; The method of claim 4.

9. a single cell having a downlink (DL) carrier and an uplink (UL) carrier is established based on the combination, and further, the DL carrier is in an SDL band and the UL carrier is in a TDD band; The method of claim 8.

10. A DL subband is supported in the cell, the bandwidth of the DL subband is equal to the UL carrier, and the DL subband is in the TDD band.

10. The method of claim 9.

11. the combination includes a combination of a frequency division duplex (FDD) band and a supplemental uplink (SUL) band; The method of claim 4.

12. a single cell having an uplink (UL) carrier and a downlink (DL) carrier is established based on the combination, and further, the UL carrier includes non-contiguous spectrum from both the FDD band and the SUL band; The method of claim 11.

13. the combination includes a combination of a frequency division duplex (FDD) band and a supplemental downlink (SDL) band; The method of claim 4.

14. a single cell having a downlink (DL) carrier and an uplink (UL) carrier is established based on the combination, and further, the DL carrier includes non-contiguous spectrum from both the FDD band and the SDL band; The method of claim 13.

15. the combination includes a combination of a time division duplex (TDD) band and a frequency division duplex (FDD) band; The method of claim 4.

16. a single cell having an uplink (UL) carrier and a downlink (DL) carrier is configured based on the combination, and a DL subband is supported by the UL carrier, and the UL carrier is in both the FDD band and the TDD band, the DL carrier is in the FDD band, and the DL subband is in the TDD band; 16. The method of claim 15.

17. a single cell having a downlink (DL) carrier and an uplink (UL) carrier is configured based on the combination, and a UL subband is supported by the DL carrier; the DL carrier is in both the FDD band and the TDD band, the UL carrier is in the FDD band, and the UL subband is in the TDD band; 16. The method of claim 15.

18. A single cell having one downlink (DL) carrier and two uplink (UL) carriers is configured based on the combination, and a DL subband is supported by one of the two UL carriers, and a bandwidth of the DL subband is equal to that of one of the two UL carriers, or the DL subband is supported by one of the two UL carriers with larger spectrum resources.

16. The method of claim 15.

19. A single cell having two downlink (DL) carriers and one uplink (UL) carrier is configured based on the combination, and a UL subband is supported by one of the two DL carriers, and the bandwidth of the UL subband is equal to that of one of the two DL carriers, or the UL subband is supported by one of the two DL carriers with larger spectrum resources.

16. The method of claim 15.

20. Using a gap between the FDD UL operating band and the FDD DL operating band as the TDD band; or using overlap of multiple bands with sub-bands, 16. The method of claim 15.

21. the combination includes a combination of two time division duplex (TDD) bands; The method of claim 4.

22. a single cell having an uplink (UL) carrier and a downlink (DL) carrier is established based on the combination, and further, the UL carrier is in one of the two bands and the DL carrier is in the other of the two bands, or both the UL carrier and the DL carrier are in the two bands; 22. The method of claim 21.

23. At least one of an UL subband and a DL subband is supported in the cell, the UL subband is supported on the DL carrier, and the DL subband is supported on the UL carrier.

23. The method of claim 22.

24. a single cell having an uplink (UL) carrier and a downlink (DL) carrier is configured based on the combination, wherein both the UL carrier and the DL carrier are in one of the two bands, and the other of the two bands is configured as at least one subband of the UL carrier and the DL carrier; 22. The method of claim 21.

25. a processor and a memory, the processor configured to read code from the memory to perform the method of any one of claims 1 to 24; Wireless communication device.

26. a computer readable program medium having stored thereon code that, when executed by a processor, causes the processor to perform the method of any one of claims 1 to 24; Computer program products.

Images